Update windows to 0.61

[jesses2025smith]

1. update windows to 0.61 and fix;
2. add anyhow and update rand for example;
3. add [PoisonError] to [Error] for replace unwrap to map_err;

[jesses2025smith]

fixed #403

[qdot]

In windows-rs 0.61, how does .get() work? Is that the blocking form, since it isn't awaited now?

[qdot]

Ok, yup, answered my own question by looking up the relevant windows-rs PR: microsoft/windows-rs#3213

.get() is blocking. This can't come in as is, we need to use the IntoFuture() casts and await as we currently do.

[qdot]

Ok, I did the fix myself 'cause it was simple and I'd like to get windows 0.61 in.